<template>
  <div style="position: relative; height: 280px;" >
    <div class="aaa" style="height: 100%; overflow-y: scroll;">
      <div style="height: 3000px; background-color: aqua;">
        内容区域
      </div>
    </div>

    <el-backtop target=".aaa" style="position: absolute"></el-backtop>
  </div>
</template>

<script>
export default {

}
</script>
